Sea monsters--gargantuan creatures rising from ocean depths to wreak havoc on man! Are they figments of the imagination or living relics of prehistoric times? We investigate the first documented American sea serpent sighte... more &raquod at Cape Ann, Massachusetts, in 1639, and the weird fish Coelacanth, caught off Africa and thought to be extinct for 70 million years. Also features footage shot by a fisherman off Vancouver's coast of Cadborosauras, a large creature that is "to science, an unknown animal."&laquo less